GC-MS/MS Determination of 16 Plasticizers in White Spirit

GC-MS/MS was applied to the determination of 16 plasticizers in white spirit. Alcohol in the sample was removed by vacuum rotary evaporation for 10 min in 30 ℃ water bath, then the sample was extracted with n-hexane and vortex oscillated for 1 min．The extract was separated with TR-5MS column,and selected reaction monitoring mode was adopted in MS/MS determination. Liner relationships between values of peak area and mass concentration of the 16 plasticizers were kept in the range of 5-1 000 μg·L-1,with detection limits (3S/N) in the range of 5-15 μg·kg-1．Tests for recovery were made at 3 concentration levels of 50,100 and 500 μg·kg-1, giving values of recovery and RSD′s (n=6) in the ranges of 70.5%-120% and less than 15% respectively.